Process for the manufacture of soluble-starch products



Patented Dec. 8, 1925.

UNITED STATES. PATENT. OFFICE.

ROBERT HALLER, OF GROSSENHAIN, GERMANY, ASSIGNOR TO CHEMISCHE FABRIK PYRGOS, OF RADEBEUL-DRESDEN, A CORPORATION OF GERMANY.

PROCESS F03 THE MANUFACTURE OI SOLUBLE-STARCH PRODUCTS.

No Drawing.

To all whom it may concern:

Be it known that I, Ronnnr HALLER, a citizen of the Republic of Switzerland, residing at Grossenhain, Germany, have invented certain new and useful Improvements in Processes for the Manufacture of Soluble-Starch Products, of which the following is a specification.

Processes for the production of soluble starch by treating starch with oxidizing agents like perborates, permanganate, chlorinated lime or other hypochlorites, are already known. These processes have different disadvantages. The action of perborates for instance is hard to regulate and often tends to an explosive boiling up. of the mixture. Permanganate and chlorinated lime cause the finished product to contain insoluble res- Examples-4 kilogram.. o f.-starchis heated idues. Alkali-metal hypochlorite's give rise to troublesby their alkaline reaction.

I have now found that starch can be turned into soluble starch, to particular advantage, by treating it with substances of the chloramine group.

with 10 grams of p-t oluene-sodium-sulphochloramide and 10 litresof water, until a I paste has been formed. Heating is then continued until the whole-mass is, liquefied [and a clear viscous solution obtained, ready to be used as'a dressing material. Its White colour gives ita better appearance than the lyellowish product made by the use of per orates.

. For purposes of transport, a simple 1uix-- ture of p-toluene-sodium-sulphochlora1nide and starch will suit the purpose. By heating this powder with water, there uired-quan tity of soluble starch can be ma e, whenever it is needed, 'for instance, for dressing.

Any sort of starch, for instance potatostarch or manioc-starch'can be-used in this process; The p-toluene-sulphochloramide can bejreplaced by other-'chloramides, for

i 3. The process of renderlng starch soluble,

Application filed February 24, 1925. Serial No. 11,345.

'withja salt of a chloramide.

6. The process of rendering starch soluble,

said process comprising acting upon starch with a salt of a chloramide in the presence of water at an elevated temperature.

7. The process of rendering starch soluble, said process comprising first mixing'starch' with .a salt of a chloramide and then acting upon .the mixture with waterat an elevated temperature.

8. The process of rendering starch soluble,

said process comprising acting upon starch with p-toluenesulfochloramide.

9. The process of rendering starch soluble, I

said processcomprising acting 'upon starch .with p-toluenesulfochloramide in the presence of water at an elevated temperature.

10. The process of rendering starch soluble, said process comprising first mixing starch with p-toluenesulfochlo'ramide and then acting upon the aforesaid mixture with water at an elevated temperature.

' 11. The process of rendering starch soluble, said process comprising actingupon starch with p-tolu ene-sodiuln-sulfochloramide. I

12. The process of'rendering starch'soluble, said process comprising acting upon starch with p tol'uene-sodium-sulfochloramide in the presence ofwateratanfilevated temperature. T

13. The process ble,. said process comprising first mixing starch with p-toluene-s dium-sulfochloramide and then acting upon the aforesaid mixture with water at an elevated temperature..

14. As a new article of manufacture, a

Y v as... of .rendering starch solumixture of starch with achloramide, said mixture being capable of dissolving when acted upon wlth water at an elevated temperature.

15. As a new article of manufacture, a mixture of starch with a salt of a chloramide, said mixture being capable of dissolv- 17. As a new article of manufacture, a ing when acted upon with water at an elemixture of starch with p-toluene-sodium-sul- 10 Vated temperature. fochloramide, said mixture being capable of t 16. As a new article of manufacture, a dissolving when acted upon with water at mixture of starch with p-toluenesulfochloraan elevated temperature. mide, said mixture being capable of dissolv- In testimony whereof I affix my signature.

ing when acted upon with water at an elevated. temperature. ROBERT HALLER. 

